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Low throughput between AIX 7.2 and RHEL Maipo


 
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Operating Systems Linux Red Hat Low throughput between AIX 7.2 and RHEL Maipo
# 1  
Old 02-25-2020
Low throughput between AIX 7.2 and RHEL Maipo

I am currently having problems with AIX and network performance.

I have an AIX 7.2 on-premises and a Linux with RH 7.7 Maipo in Google Cloud. Between the 2 machines I have a guaranteed bandwith of 1 Gbit/s.

Firstly I started with a trivial traceroute: what I noticed is that after some hops appears the following error "fragmentation required, trying new MTU=1492". Basically this appears 4 times: MTU changes from the starting 1500 to 1492, then to 1480, then to 1472 and finally to 1006. This brings also a very very low throughput (around 16 Mbit/s). Do you have any idea of what's going on? If I try the same experiment from a Linux machine I don't get this issue and the throughtput is quite good (around 320 Mbit/sec).

thank you Smilie
# 2  
Old 02-25-2020
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Extremely low throughput between AIX 7.2 and RHEL Maipo

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